Like other countries, New Zealand revises its maps and its coordinate
system from time to time. The one in use at the time that image was
digitised is probably the one described here:
https://www.linz.govt.nz/data/geodetic-system/datums-projections-heights/projections/new-zealand-map-grid-nzmg
On
Out of curiosity, and considering the bewildering array of projections
and grids in use for various mapping purposes, you seem to be saying in your
example 2 that the grid coordinates number south to north and east to
west. Given scale of the coordinate numbers, would that be a national
grid syste
Hey, I know that volcano! It's walking distance from the Intermediate
school I attended.
To you it's a plot; to me it's a place.
So I offer you four scenarios.
1. You think of it as a place you know and have been.
In that case the "right" orientation is the one that best matches
what you are
Sorry, one more thing.
My response didn't really answer your question.
But I would say that the formats of most datasets used in statistics
are reflective of the preferences of the people that collected or
published them, at the time...
Also, I've found the older publications quite often have cons
> Does anyone know why 'volcano' is oriented as it is?
> image(volcano) ## filled.contour is the same
Great question!
graphics::image produces a "plot".
It follows the same x y conventions as other plots in the graphics package.
It's *defaults* are not designed to display photos, etc.
However,
Hi,
Hmmm. The only place I have ever seen a georeferenced version of 'volcano'
is here...
https://waterdata.usgs.gov/blog/inlmiscmaps/
It was on the internet so I assumed it was true. Now, I suspect that, since
the original survey by Ross Ihaka, continental drift is happening wy
faster than
Does anyone know why 'volcano' is oriented as it is?
image(volcano) ## filled.contour is the same
I know it's all arbitrary, but north-up is a pretty solid convention. Is
there any reason why the classic 'image()' example data set would not
default to this orientation?
A Google map of the site
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